body{   
    width: 585px;
    height: 2000px;
    margin: 0 auto;
    font: normal 14px/1.5 Tahoma, "Lucida Grande",Verdana,"Microsoft Yahei",STXihei,hei;
    overflow-x: hidden;
    -webkit-tap-highlight-color: transparent;
    background-color: #FAFAFA
}
div{
    box-sizing: border-box;
}
a{
    text-decoration: none;
    color: #222;
}
.top{
    position: fixed;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr; 
    font-size: 23px;    
    align-items: center;
    column-gap: 40px;background-color: #FAFAFA;
}
li{
    list-style: none;
}
.top span{
    float: right; 
}
.search-index{
    /*固定盒子必须由宽度*/
    display: grid;
    position: fixed; 
    top:0;
    max-width: 540px;
    min-width: 320px;
    left: 50%; 
    transform: translateX(-50%);/*居中*/
    width: 100%;
    height: 44px;
  
}
.search{
    position: relative;
    height: 35px;
    line-height: 35px;
    border: 3px solid #FF5C00;
    font-size: 18px;
    color: #666;
    margin: 70px -10px;
    padding-left: 10px;
    border-radius: 20px;
    background-color: #FAFAFA;
}
.camera{
    position: relative;
    float: right;
}
.search-chilk{
    top:1px;
    position: relative;
    float: right;
    width: 70px;
    height: 25px;
    background-color: #FF5C00;
    border-radius: 20px;
    border: 1px solid #FAFAFA;
    text-align: center;
    color: #FAFAFA;
    font-size: 16px;
    
}
.full{
    width: 100%;
    height: 110px;
}
.xuanze{
    display: grid;
    width: 100%;
    height: 200px;
    background-color: aqua;
    border-radius: 8px;
    grid-template-columns:1fr 1fr 1fr 1fr 1fr;
    justify-items: center;
}
.xuanze span{
    height: 50px;
}